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@Witch ftatrs gleitet @Hirn JOHN E. BROWN, vOF FI'ICHBURG, MASSACHUSETTS, ASSIGNOR TO HIM- SELF AND JOHN Q. WRIGHT, OF SAME PLAGE.

Letters Patent No. 71,127, dated November 19, 1867.

IMPROVEMENT IN SPINDLE-BOLSTER.

To ALL WHoM rr MAY coNcERN:

Beit known that I, JOHN E. BROWN, of Fitchburg, in the county of Worcester, and State of Massachusetts, have invented a new and improved Bolstcr; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, making a part of this specification, in whichj Y I Figure 1 is an enlarged central section, taken vertically through the improved bolster, showing it applied upon a spindle. This invention relates to an improvement on the construction of holsters or bearings for upright spindles for various purposes, but more particularly for such as -require. to be driven at a very high speed. The nature of my invention consists in so constructing a bolster that the oil is automatically supplied to its spindle in proper quantities at a point above the level of the oil in the bolster-cup, thereby allowing all sediment to be deposited at the bottom of theloil-receptacle, and regulating the supply ofgil according to the consumption, or the degree of speed given to the spindle, as will be hereinafter described.

To enable others skilled in the art to understand my invention, I will describe its construction and operation.

In the accompanying drawing, A represents the spindle of a spinning or a cop-winding machine. B is a i rail, .through which the spindle passes, and upon which the bolster is supported. The lower end of the spindle is supported in a step-block, C, constructed in any suitable manner. At a certain distance above the rail B, the spindle A is reduced iu diameter so as to leave a shoulder, a a, upon it, and just above this shoulder a left-hand screw-thread is cut upon the spindle for receiving the bobbin-holder D, as shown in the drawing. The upper end of this bobbin-holdcr is provided with studs for receiving and carrying around with it the bobbin, and the lower portion of this holder is chambered so as to form a circular recess for receiving a sleeve or tubular pro-A jection, b, on the bolster-cup E. This chambered portion of the holder D has a groove, e, made in its interior surface, which groove extends from its lower end to perforations ol d, and winds around it in a spiral direction,` for the purpose of elevating oil from a point near the bottom of the cup E, and discharging the oil thus elevated through the said openings dback into the cup again. When the bobbin-holder D is screwed in place upon the spindle A, there is a space, e, between the upper end of its chamber and the shoulder a a upon the spindle, into which space oil from cup E is raised, and thus supplied to the spindle and its bearing. The sleeve or tubular projection b is made so as to iit snugly, but not tightly, within the cup or chamber of the bobbin-holder, and to extend up to the shoulder a upon the spindle, and to the discharging-apertures d d through the said holder, as shown. There is also a space left between the lower end of the bobbin-holder and the bottom of the oil-cup Ei The oil-cup E is of a cylindrical form, and extends above the top of its central tubular projection 0r sleeve receiving upon its upper end a cap-ring, F, through the central h'ole of which the bobbin-holder D passes freely. This cap encloses the loil put into the cup E, and prevents dust, waste, or any other foreign matters from mixing with the oil. The bolster-bearing or sleeve b may be made of any desired length by extending itdown through the rail B, as shown, and thu's projecting it from the bottom ofthe oil-cup. It will be seen by reference to the drawing that I introduce within the oil-cup E a cylinder, y, which ts snugly therein, and extends up to within a short distance of the top or cover Il, and has a ila-nge or ring, y', formed on its upper end, which forms a par tial division in said cup.

I do not confine my invention to a single spiral groove in the bolster for raising oil, as several grooves may' be made, and, if desirable, annular grooves may be made in the sleeve and' also in the interior of the bobbinholder. When the spindle A, with its bobbin-holder D, is rotated rapidly, the spiral groove c will raise the oil in a small stream from 'the bottom of cup E into the annular chamber e at the upper end of the sleeve Z1,

where th'e oil will bc supplied to the spindle. The apertures d (Z will allow the oil to escape and run back into the oil-cup E. In this way there will be a continued supply of oil to the spindle as long as the spindle is kept in motion and the oil-eup kept supplied; and as the raising of the oil depends upon the rotation of the spindle, it will be seen that the greater the consumption of oil between the spindle and its bearing or sleeve, the greater will be the supply of oil.

Having described my invention, what I claim as new, and desire to secure by Iietters Patent,is-

1. So constructing u bolster-spindle, that the oil for lubricating the latter is automatically supplied at u. point above the level of the oil in the bolster-cup, substantially as described.

-2. Constructing the bobbin-holder D with u chamber in its lower end for receiving the sleeve which is formed upon the oil-cup E,sa.id holder being secured to the spindle A, so as to rotate with it, substantially as described.

3. The spiral groove c, formed 1n the chambered bobbin-holder D, in combination with the sleeve b, formed on the oil-.cup E, substantially'as described.

4. The outlets cZ d through a. chambered bobbinholder, D, or the equivalent thereof, in combination with a. device which allows oil to rise from cup E, substantially as and for the purpose described.

JOHN E. BROWN. Witnesses:

STILLMAN HAYNES, JAMES M. WooDBUnY. 

